Luth-AR AR-15 A2 Rear Sight Assembly - UR-21K
Complete A2 rear sight kit for carry handle uppers
In stock
Luth-AR AR-15 A2 Rear Sight Assembly
The Luth-AR A2 Rear Sight Assembly includes the parts needed to complete or restore an A2-style carry-handle upper with proper windage and elevation adjustments. It’s an ideal solution for retro builds, replacements, or spare parts kits—providing the classic A2 sighting system with the adjustability shooters expect for dialing in at distance.
This kit includes the rear base components, windage and elevation hardware, springs, bearings, and indexing parts required for installation on A2-pattern uppers.
Features
- Complete kit for A2 carry handle rear sight installation
- Windage and elevation adjustable A2-style system
- Great for retro builds, repairs, or spare parts
- Includes springs, bearings, knobs, and indexing components
Specifications
- Platform Compatibility: AR-15 A2-style carry handle upper receivers
- Sight Type: A2 rear sight (windage + elevation adjustable)
- Includes: Full A2 rear sight assembly components listed below
Includes
- UR-29 A2 Rear Base Lug (x1)
- UR-27 A2 Rear Sight Aperture (x1)
- UR-28 Rear Base Flat Spring (x1)
- UR-26 Rear Base Windage Knob Screw (x1)
- UR-23 Rear Base Windage Knob (x1)
- UR-22 Rear Base Windage Pin (x1)
- UR-24 Rear Base Spring (x3)
- UR-25 Rear Base Ball Bearing (x3)
- UR-33 Rear Base Index Elevation (8/3) – (x1)
- UR-34 Rear Base Elevation Knob (x1)
- UR-31 Rear Base Elevation Knob Spring (x1)
- UR-06 Rear Base Spring Pin (x1)
- UR-32 Rear Base Index Screw (x1)
| Weight | 4.8 oz |
|---|---|
| Dimensions | 5 × 2 × 2 in |
| MPN | UR-21K |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
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